Kent Police said that more than a hundred people were stuck for more than four hours on the A2 at Lydden near Dover after a lorry jack-knifed.
Once the lorry was cleared from the countbound carriageway, snow drifts built up, in some places up to a metre high due to strong winds.
More top news
Simon's Blog - Moths & Butterflies
Thursday night's weather for the east of the region
Thursday night's weather for the west of the region